Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A047978
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A047978 Let (p1,p2), (p3,p4) be pairs of twin primes with p1*p2=p3+p4-1; sequence gives values of p3. +0
2
17, 71, 881, 2591, 179999, 206081, 388961, 2268449, 2836961, 3612671, 6329681, 6415361, 10342151, 18800711, 28486151, 32080049, 40878881, 89753201, 97050311, 127552391, 154844801, 183169799, 230953031, 344531249 (list; graph; listen)
OFFSET

0,1

EXAMPLE

E.g. 5*7=17+19-1,11*13=71+73-1.

CROSSREFS

Cf. A047976-A047979.

Sequence in context: A106921 A105414 A069496 this_sequence A050524 A087514 A119625

Adjacent sequences: A047975 A047976 A047977 this_sequence A047979 A047980 A047981

KEYWORD

nonn

AUTHOR

Naohiro Nomoto (6284968128(AT)geocities.co.jp)

page 1

Search completed in 0.002 seconds

Lookup | Welcome | Find friends | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
More pages | Superseeker | Maintained by N. J. A. Sloane (njas@research.att.com)

Last modified July 8 18:40 EDT 2008. Contains 141013 sequences.


AT&T Labs Research